CVE-2026-0483

MEDIUM

LiveHelperChat < 4.72 - Stored Cross-Site Scripting via PDF File Upload

Title source: llm
STIX 2.1

Description

Stored Cross-Site Scripting (XSS) vulnerability in the PDF file upload functionality of Live Helper Chat, versions prior to 4.72. An attacker can upload a malicious PDF file containing an XSS payload, which will be executed in the user's context when they download and open the file via the link generated by the application. The vulnerability allows arbitrary JavaScript code to be executed in the user's local context.

References (1)

Core 1

Scores

CVSS v4 6.9
EPSS 0.0024
EPSS Percentile 15.4%
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (1)
LiveHelperChat/LiveHelperChat < 4.72
Published Jan 28, 2026
Tracked Since Feb 18, 2026